655432187785 has 8 divisors (see below), whose sum is σ = 790636525056. Its totient is φ = 521600483760.

The previous prime is 655432187779. The next prime is 655432187791. The reversal of 655432187785 is 587781234556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (655432187779) and next prime (655432187791).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655432187785 - 2²⁵ = 655398633353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343157259 + ... + 343159168.

It is an arithmetic number, because the mean of its divisors is an integer number (98829565632).

Almost surely, 2^655432187785 is an apocalyptic number.

It is an amenable number.

655432187785 is a deficient number, since it is larger than the sum of its proper divisors (135204337271).

655432187785 is a wasteful number, since it uses less digits than its factorization.

655432187785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686316623.

The product of its digits is 56448000, while the sum is 61.

The spelling of 655432187785 in words is "six hundred fifty-five billion, four hundred thirty-two million, one hundred eighty-seven thousand, seven hundred eighty-five".